Shaker screen



R. B. KLEES SHAKER SCREEN Ndv. 23 1926.

Filed July 20, 1925 Qvwentoc Patented Nov. 23, 1926.

UNITED sTA'rss RAYMOND B. KLER S, OF NATALIE, PENNSYLVANIA.

SHAKER SCREEN.

Application filed July 20, 1925.

The present invention relates to shakers or screens employed in thegrading of coal, the primary ob ect of the invention belng to providenovel means for securing the shaker adjacent ends of the shaker plates,to insure against the shaker plates becoming separated, therebyeliminating leakage of the finer grades of coal between the adjacentedges of the shaker plates.

A still further object of the invention is the provision of means topermit the shaker plates to be readily and easily removed and replacedwhen the same become damaged, worn or otherwise rendered inoperative.

With the foregoing and other objects in View which will appear as thedescription proceeds, the. invention resides in the combinat-ion andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of the in vention herein disclosed, may be made within thescope of what is claimed, without departing from the spirit of theinvention.

Referring to the drawing:

Figure 1 is a plan View of a shaker or screen constructed in accordancewith the invention.

Figure 2 is a longitudinal sectional view therethrough.

Figure 3 is a sectional view taken on line 33 of Figure 1.

Figure 1: is a longitudinal sectional view through a modified form ofthe invention.

Figure 5 is a sectional view taken on line 5-5 of Figure 4.

Referring to the drawing in detail, the frame of the shaker is indicatedgenerally by the reference character 5 and includes the side rails 6 and7 respectively, which side rails are supported in suitable spacedrelation with each other by means of the angle bars 8, which also act asretainers for the shaker plates.

These angle bars or retainers are arranged in pairs, and as shown, arebolted to the side rails 6 and 7 of the frame by means of bolts 9, thebars being also arranged with respect to the side rails of the frame, topro- Serial No. 44,838.

vide spaces between the bars of each pair.

The shaker plates are indicated by the reference character 10 and asshown, have their side edges bent downwardly providing parallel fianges11 which afford means to be engaged by the angle bars or retainers 8 forsecuring adjacent shaker plates together. Suitable openings are formedin the flanges 11 of the shaker plates, for the reception of thelaterally projecting pins 12 which are carried by one of the angle bars8 or retainers, of each pair, the projecting pins 12 also passingthrough openings in the adjacent bar, which openings register with theopenings of the flanges 11 of the shaker plates.

Thus it will be seen that due to this construction the shaker platespresent a smooth and even surface throughoutthe length of the shaker,eliminating all shoulders and bolt heads commonly found in shakerconstructions, which tend to break the coal.

The side edges of the shaker plates extend upwardly as at 13 and restagainst the side rails 6 and 7 of the shaker frame insuring against thecoal passing from the shaker at points adjacent to the side rails 6 and7, and edges of the shaker plate.

In the form of the invention as illustrated by Figures 4 and 5 of thedrawings, angle bars such as indicated at 14 are provided for retainingthe side members 6 and 7 of the frame in suitable spaced relation witheach other, the angle bars being formed with openings arranged in spacedrelation with each other, and disposed throughout the lengths of theupper angles thereof, which openings accommodate the pins 15 of thebracing bars 16 which have their ends bolted to the side rails 6 and 7by means of bolts 17.

In this form of the invention the shaker plates which are indicated at18 are provided with offset portions 19 and 20 respectively, the offsetportions 19 being relatively shallow, or of a sufficient depth to allowthe bracing bars 16 to lie flush with the upper surfaces thereof, whilethe offset portions 20 are of such depths as to provide for thepositioning of the adjacent offset portion 19 of the next shaker plateas well as its bracing bar 16, to the end that a smooth surface will beprovided throughout the length of the shaker.

The pins 15 pass through suitable registering openings in theoverlapping ends of the shaker plates and have their extremitiesdisposed as before stated in the openings of the upper angles of theangle bars. 7

Thus it will be seen that due to this con st-ruction the adjacent endsof the shaker plates are so secured that all possibilities of a shakerplate moving out of engagement with its adjacent shaker plate areeliminated, thereby insuring against leakage at the points of connectionbetween adjacent haker plates.

I claim In a shaker construction, a frame, a plurality of screensections supported by the frame, said screen sections includingtransversely disposed angle bars secured to the frame, wire meshmaterial stretched over the angle irons, one of the angle irons of eachscreening section having a. plurality of spaced pins, the opposite angleiron of the section having spaced openings to receive the pins, adjacentangle irons adapted to be brought into engagement with each other tocause the pins to pass into the openings, and said wire mesh materialadapted to be clamped between adjacent angle bars, and said pins adaptedto extend through the mesh of the wire mesh material to secure the wiremesh material. in position.

In testimony that I claim the foregoing as my own, I have hereto aflixedmy signature.

RAYMOND B. KLEES.

